mbox series

[v5,0/5] vhost: handle memory hotplug for async vhost

Message ID 20210716072436.19017-1-cheng1.jiang@intel.com (mailing list archive)
Headers
Series vhost: handle memory hotplug for async vhost |

Message

Jiang, Cheng1 July 16, 2021, 7:24 a.m. UTC 
  When the guest memory is hotplugged, the vhost application which
enables DMA acceleration must stop DMA transfers before the vhost
re-maps the guest memory.

This patch set is to provide an unsafe API to drain in-flight pkts
which are submitted to DMA engine in vhost async data path, and
notify the vhost application of stopping DMA transfers. And enable it
in vhost example.

v5:
 * added fixes in 'vhost: fix async vhost ops return type'
 * improved git log, variable names and logs
v4:
 * rebased on the latest codess
v3:
 * added a patch to fix async ops return type
 * fixed async ops fail handler
 * updated the doc
v2:
 * changed the patch structure

Cheng Jiang (4):
  vhost: fix async vhost ops return type
  vhost: add unsafe API to drain pkts in async vhost
  examples/vhost: handle memory hotplug for async vhost
  doc: update doc for try drain API in vhost lib

Jiayu Hu (1):
  vhost: handle memory hotplug for async vhost

 doc/guides/prog_guide/vhost_lib.rst    |   5 +
 doc/guides/rel_notes/release_21_08.rst |   5 +
 examples/vhost/ioat.c                  |   4 +-
 examples/vhost/ioat.h                  |   4 +-
 examples/vhost/main.c                  |  48 +++++++-
 examples/vhost/main.h                  |   1 +
 lib/vhost/rte_vhost_async.h            |  32 +++++-
 lib/vhost/version.map                  |   3 +
 lib/vhost/vhost_user.c                 |   9 ++
 lib/vhost/virtio_net.c                 | 149 ++++++++++++++++++++-----
 10 files changed, 220 insertions(+), 40 deletions(-)

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2.29.2